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Finding the Fourth Proportional to 7,280.44, 10,047.90 and 4,136.92

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Solution

The fourth proportional to 7,280.44, 10,047.90 and 4,136.92 is: 5,709.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.44 : 10,047.90 = 4,136.92 : x
  2. Step 2: Convert to fraction form
    7,280.44/10,047.90 = 4,136.92/x
  3. Step 3: Cross multiply
    7,280.44x = 10,047.90 × 4,136.92
  4. Step 4: Simplify right side
    7,280.44x = 41,567,358.47
  5. Step 5: Solve for x
    x = 41,567,358.47/7,280.44
  6. Step 6: Final answer
    x = 5,709.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.